Glossary: cargo

33 terms in this category.

• 'Tween Deck
  An intermediate deck between the upper and lower decks of a cargo hold, providing separate stowage tiers for break-bulk cargo.
• Angle of Loll
  The angle at which a vessel with negative initial stability comes to rest on her side as she cannot return to upright.
• BAPLIE
  An EDI message format conveying the stowage positions of all containers aboard a vessel between terminals and ship operators.
• Bay Plan
  A grid diagram showing every container slot in a vessel's cross-section by bay, row, and tier with container data.
• Break Bulk
  Non-containerised cargo loaded individually as bags, bales, crates, or drums rather than in standard containers.
• Broken Stowage
  The wasted space in a cargo hold that cannot be utilised due to the shape or packaging of the cargo being carried.
• Dangerous Goods
  Cargo classified under the IMDG Code as posing risks to health, safety, property, or the environment during sea transport.
• Deadweight
  The total weight a vessel can carry including cargo, fuel, water, stores, and crew, measured in metric tonnes.
• Deck Cargo
  Cargo stowed on the open weather deck and exposed to the sea environment, requiring additional securing and weatherproofing.
• Displacement
  The total mass of water displaced by a floating vessel, equal to the combined weight of the hull, machinery, cargo, and stores.
• Dunnage
  Timber, mats, or other material placed under or between cargo to protect it from moisture, damage, and shifting.
• Forty-foot Equivalent Unit
  Standard unit of cargo capacity equivalent to one 40-foot ISO shipping container, equal to two TEU.
• Free Surface Effect
  The virtual reduction in GM caused by a liquid surface in a partially filled tank that moves as the ship heels, reducing stability.
• International Maritime Dangerous Goods Code
  IMO code governing the safe carriage of hazardous materials by sea, covering classification, packing, marking, and stowage.
• Lashing
  Chains, wire, or webbing straps used to secure cargo on deck or in holds against movement during sea passage.
• Lashing Rod
  A threaded steel rod used in combination with turnbuckles to secure containers and deck cargo against movement at sea.
• Light Ship
  A vessel's weight when fully equipped with permanent fixtures but without cargo, fuel, ballast, stores, or crew on board.
• Material Safety Data Sheet
  A document providing information on the hazards, handling precautions, and emergency procedures for a chemical or dangerous cargo.
• Metacentric Height
  The vertical distance between the centre of gravity (G) and the metacentre (M), the primary indicator of a vessel's initial stability.
• Moment to Change Trim 1 cm
  The trimming moment in tonne-metres needed to alter a vessel's trim by one centimetre, used in stability calculations.
• Reefer
  A refrigerated container or cargo space maintaining a controlled temperature for perishable goods during transport.
• Reefer Plug
  An electrical socket in a ship's hold or on deck providing power to a reefer container's refrigeration unit.
• Roll-On/Roll-Off
  Cargo handling method where wheeled vehicles or trailers drive on and off the vessel under their own power via ramps.
• Segregation
  The physical separation of incompatible dangerous goods in stowage to prevent hazardous reactions if packaging fails.
• Stowage Factor
  The volume in cubic metres or cubic feet that one metric tonne of a commodity occupies when stowed in a ship's hold.
• Stowage Plan
  A diagram showing the planned or actual position of all cargo units aboard a vessel for a given voyage.
• Summer Draft
  The maximum permissible draft when loading in a Summer load line zone, shown on the ship's side as the Summer load line mark.
• Tonnes Per Centimetre
  The mass required to change a vessel's mean draft by one centimetre, used to calculate draft changes during loading or discharging.
• Trim by the Head
  A trim condition where the forward draft exceeds the aft draft, reducing steering effectiveness and increasing wave-making resistance.
• Trim by the Stern
  A trim condition where the aft draft exceeds the forward draft, generally preferred for sea passage to improve propulsive efficiency.
• Turnbuckle
  A threaded tensioning device fitted in a lashing rod or wire to adjust and tighten cargo securing arrangements.
• Twenty-foot Equivalent Unit
  Standard unit of cargo capacity equivalent to one 20-foot ISO shipping container, used to measure container ship capacity.
• Twistlock
  A securing device that fits into container corner castings and locks by a 90° twist to stack and secure containers.